Sewing machine



(No Model.) 3 Sheets-Sheet l.

H. GANSERT. SEWING MACHINE.

No. 438,074. Patented Oct. 7, 1890.

A TTOHNE YS TNE NONRIS PETERS CO. PNDYOLITMO., WASHINGTON, D. C. l

3 Sheets-#Sheet 2.

(No Model.)

H. GANSBRT.

SEWING MACHINE.

No. 438,074. Patented Oot. 7, 1890.

W/ TNESSES (No Model.) 3 vSheets-Sham, 3. H GANSERT.

SEWING MACHINE.

Patented 001;. 7, 1890.

W/TNESSES A TTOHNE Y S ma muws persas co., maremma., msnmn'mu, o, eA

UNITED 4STATES,

PATENT GEEICE.

HERMANN GANSERT, OF NEV YORK, N. Y.

SEWING-MACHINE.

SPECIFICATION forming part of Letters Patent N o. 438,074, dated October 7, 1890. Application filed May 8, 1890i Serial No. 350,973. (No model.)

.To a/ZZ whom it may concern:

Be it known that I, HERMANN GANsEEr, a citizen of the United States, residing at New York, in the county and State of New York, have invented new and useful Improvements in Sewing-Hachines, of which the following is a specification.

This invention relates to certain improvements in sewing-machines, as pointed out in the following specification and claims and illustrated in the accompanying drawings, in which- Figure 1 represents a side elevation. Fig. 2 is a front View. Fig. 3 is a horizontal section in the plane Fig. 2. Fig. 4 is a vertical section in the plane y y, Figs. 1 and 3. Fig. 5 is a horizontal section in the plane a e', Fig. 2. Fig. 5* is a vertical section in the plane as Fig. 5. Fig. 6 is a transverse vertical section in the plane y y', Fig. 1. Fig. 7 is a similar section in the plane e z', Fig. 1. Fig. 8 is a similar section in the plane no2 x2, Fig. 1. Fig. 9 is a section in the plane y2 y2, Fig. S. Fig. 10 is an inverted plan View. Fig. 11 is a section in the plane zzz?, Fig. 10. Fig. 12 is a section in the plane w3 ac3, Figs. 1 and 6, on a larger scale than the previous figures. Fig. 13 is a horizontal section in the plane ys 1/3, Fig. 2. Fig. 14 is a similar section in the plane a3 as, Fig. 2. Fig. 15 is a plan view of the shuttlefcarrier. Fig. 16 is a vertical section in the plane 064 x4, Fig. 15. Fig. 17 is a section in the plane ff g4, Fig. 5*. Fig. 18 is a partial side elevation of the needle-bar. Fig. 19 is an elevation of the middle portion of the needle-bar.

In the drawings, the letter A designates the table or work-plate, from which rises the standard B, which forms the bearings for the driving-shaft C.

D is the needle bar or slide,which is square in cross-sections, as shown in Figs. 3, 5, 13, and 14, and which extends through three sleeves ct b c. The sleeves a and c have their bearings in journal-boxes d and e, respect-- ively, which are formed on arms extending from the standard B, and said sleeves are fitted into their journal-boxes so that they can freely revolve in the same; but they are prevented from moving in the direction of their axis. The sleeve h is rmly secured to the needle-bar, as shown in Fig. 19, and it is fit ted into a journal-box f so that it can turn therein but not move in the direction of its axis.

From the journal-box f extends a pin g, Fig. 1, into one end of a rod E, the opposite end of which engages an eccentric wrist-pin h, carried by the driving-shaft C. When this shaft is revolved, a reciprocating motion is imparted to the needle-bar D, while-at the same time said needle-bar is free to be turned in either direction. On the lower end of the needle-bar D is secured a screw-clamp F, which has four jaws, two of which serve to secure the clamp on the needle-bar, while the other two serve to hold the needle n. (See Figs.2 and 5*.) By referring to these figures it will be seen that the needle is not in line with the longitudinal axis of the needle-bar, so that when the needle-bar is rotated the needleis carried round in a circle the diameter of which can be increased or diminished by adjusting the needle in the clamp F.

All the sleeves a, h, and c are provided with slots t', of the form shown in Figs. 5, 17, and 18, so that thread can be carried down from the spool to the needle n close to the needlebar, as shown in Fig. 2. The spool is mounted on a platform G, which fits the needle-bar and turns with the same, and since that portion of the thread which passes down to the needle extends through the slots t in the sleeves it will be carried round with the needle-bar without the liability of getting entangled. The course of the thread from the spool is shown in Fig. 2, and it passes through an eye in the spring H, which extends throughaslot in the needle-bar and forms the take-up.

I is the pressenfoot, which is secured to a barJ by means of a screw j and clamp k. (See Fig. 14.) The bar J slides in sockets Z Z, formed in one of the arms projecting from the standard B, (see Figs. 2 and 4,) and it is exposed to the action of the springm, which has a tendency to force said bar downward. A lever K, Fig. 2, serves to force the bar J upward, so as to lift the presser-foot I clear of the table A. The presser-foot consists of two jaws o 0, which swing on the screw j, and the tails of said jaws extend upward, and between their beveled ends is introduced a wedge p, Fig. l, which IOC can loe adjusted up or down by means of at set-screw q. The jaws o 0 are provided with V-shaped clamping devices oioii, Fig. 14, and a spring r, Fig. 1, has a tendency to force these clamping devices toward each other. These clamping devices are formed to retain abutton, as shown in Fig. 14, and by depressin g the wedge p they can be opened so that the button can be readily adjusted between them. In the example shown in the drawings the button has four sewing-holes, and the needle m must be adjusted in the clampF at such a distance from the vertical axis of needle-bar that it will be able to pass through the holes in the button.

The driving-shaft C is geared together with a counter-shaft L, so that both turn with the same velocity. 0n this counter-shaft is mounted an eccentric M, which acts upon a lever N, Figsl and 6, by means of which the needle-bar D is turned after each descent of the needle a sufficient `distance to bring the needle over another hole in the buttonQ-that is to say, if the button has four sewing-holes a quarter-turn is imparted to the needle-bar after each descent of the needle; but if the button has only two sewing-holes a half-turn must be imparted to the needle-bar after each descent of the needle. For this purpose the lever N acts upon a bar O, the upper end of which is provided with cogs to engage a pinion P, which is mounted loosely upon the shaft R, but can be brought in gear with said shaft by a friction-clutch T, the female part of which is cast integral with the pinion P, while the male part is feathered upon the shaft R and can be moved in the direction of the axis of said shaft by means of a forked lever U. (Best seen in Figs. 1 and 7.) This lever has its fulcrum on a screw q, and it is actuated by means of afcam r, secured on the connecting-rod V, which serves to transmit motion from the driving-shaft Ctoa shaft W below the table or work-plate. When the cam fr strikes the roller rl, which is mounted in an arm X, connected to or formed on the lever U, the clutch T is closed andthe movement of the bar O (imparted to the same by the eccentric M and lever N) is transmitted to the shaft R. This shaft is geared together with the needle-bar by pinions d0 dit, (best seen in Fig. 2,) so that the latter is turned the required distance. Of course the revolving movement of the needle-bar must take place during the time when the needle is clear of the work, and it is very desirable that during the time when the stitch is formed the needle-bar shall be retained, so that it can not rotate. For this purpose a counter-clutch T* is provided, the female part of which is rmly connected to the standard B, Fig. 1, i while the male part is feathered on the shaft R and exposed to the action of a spring fr0, which has a tendency to keep the clutch in a j.

locked position. Vhen the needle-bar is to be turned, the counter-clutch ilf must be opened, and for this purpose the lever U is provided with an arm t6", which acts upon a slide uo, which is tted into the shaft R and the inner end of which bears against ashoulder uw formed in the interior of the male part of the counter-clutch Ti. (See Fig. 11.) When the lever U is moved to close the clutch T, the arm u* of said lever opens the counterclutch Tik, and when the lever U opens the clutch T the counter-clutch is closed by the action of the spring ro.

For the purpose of forming the stitches I use a shuttle S, which co-operates with the needle n, and which rests upon the shuttlecarrier A', Figs. 1 and 15, which is secured by a pivot a to a platform B. This platform is provided with a vhub '19', Fig. 16, which extends through and turns'freely in a lug c', e'xtending from a hanger C, Vwhich i's secured to the table A, Figs. 1 and 10, and through said hub extends a pin D', which is forced downward vby a spring d', and on which the platform B', with the shuttle-carrier A, canf revolve. The pin D rests upon a cam E', which is mounted on the shaft YV, so that for each revolution of the shaft the pin D is forced up by the cam E and then down by the spring CZ. The upper end of the pin D is beveled and bears against alever F which is secured to the platform B by a pivot f', andis situated beneath the shuttle-carrier A. The tail end of this lever F bears against a set-screw g, secured in a lug projecting from the shuttle-carrier, and a spring h', Fig.v15, retains the set-.screwg in contact with the lever F. 1t will be seen thatr the set-screw g is close 'to the pivot a ofy the shuttle-carrier, so that by the action of the beveled end of the pin D on the short arm of the lever F sufficient motion is imparted to the shuttlecarrier A to throw the shuttle back and forward through the loop of the needle-thread. On the hub b of the platform B is firmly mounted a pinion fi', which gears into a pinion j', mounted on the end of a shaft R', which is situated beneath a table A and which carries a clutch T and a counterclutch Ti the same as the shaft R, which serves to rotate the needle-bar D, as previously described. nectedY the pinion P', which gears into 'cogs on the bottom end of the b ar O. The clutch T and the counter-clutch Tdi are actuatedby the lever U', which has its fuloium onfthe pivot q', a pin u', so that it is brought into action by the cam r precisely in the same manner and at the same time as the lever U.

From this description it will be seen that tion of the needle-bar and the shuttle-carrier is determined by the throw of the eccentric IOO IIO

With the clutch T is conand is connected to the lever U by f for each revolution of the shaft C a stitch is M, and in order to be able to adjust this throw' the eccentric M is mounted on a disk Mk, which is firmly secured on the shaft L, Figs. 1 and 12. In Figs. 6 and 12 the eccentric M is shown in position to produce its maximum throw; but if said eccentric is turned from this position in either direction its throw is diminished and it can easily be adjusted so that the needle-bar and the shuttle-carrier will be turned a quarter-revolution or any other portion of a revolution after the formation of each stitch. f

The driving-pulley G turns loosely on the shaft C and is thrown in gear with the saine by a clutch H which is retained in engagey ment with the driving-pulley by a spring a2.

On the clutch H is formed a tooth b2, which meshes into a cog-wheel c2, mounted loosely on a stud d2, which projects from the standard B, Fig. 1.

I is a lever the upper forked end of which engages the clutch H, and which has its fulcrum on a screw e2, secured in a lug projecting from the table A. This lever is provided with an eye f2, which embracesa sleeve g2, tting the stud cl2, and center-pointed screws h2 serve to secure the eye f2 to the sleeve g2. A spring g3 acts upon the sleeve g2.

The cog-wheel c2 is provided with a rim 2, on which is adjustably secured a lug jz and an index k2, Fig. 9. As the cog-wheel c2 is propelled one tooth for each revolution of the shaft C, the lug jz is in the course of time brought in contact with the lever I', and this lever is forced back so as to throw the clutch H out of gear withthe driving-pulley G, when the motion of the shaft C will stop. By adjusting the index k2 on the rim of the cogwheel c2 the time when the machine will stop can be fixed, or, in other words, the index can be adjusted so that the machine will stop after it has madeacertain number of stitches.

From this description it will be seen that my machine can be used for sewing circular seams into a fabric.

If the machine is used for sewing on buttons, the throat-plate can be provided with a number of holes to correspond to the holesin the buttons; but for general use the throatplate can be provided with a single hole and geared together with the shaft R. It must be also remarked that the slotsz' in the sleeves b and c are open, so that the thread can be readily introduced into the same.

lVhat I claim as new, and desire to secure by Letters Patent, is-

1. The combination, with the driving-shaft C and with the stitch-forming devices, such as a needle and shuttle, which receive motion from said driving-shaft, of mechanism, substantially as described, for imparting to the needle-bar and to the shuttle-carrier a partial revolution round the longitudinal axis of the needle-bar, and a device for attaching the needle to the needle-bar parallel to but not in line with the axis of rotation of said needle-bar, substantially as described.

2. The combination, with the driving-shaft C and with the stitch-forming devices, such as a needle and shuttle, which receive motion from said driving-shaft, and with means for imparting to the needle-bar and to the shuttie-carrier a partial revolution round the 1011- gitudinal axis of the needle-bar, of an adj ustable eccentric for regulating the revolving motion of the needle-bar and shuttle-carrier, substantially as described.

3. The combination, with the driving-shaft C and with the stitch-forming devices, such as a needle and shuttle, which receive motion from said driving-shaft, of mechanism, substantially as described, for imparting to the needle-bar and to the shuttle-carrier a partial revolution round the longitudinal axis of the needle-bar, a stop for preventing the needlebar and the shuttle-carrier from turning during the timewhen the needle-bar isin the work, and a device for attaching the needle to the needle-bar parallel to but not in line with the axis of rotation of said needle-bar, as described.

4. The combination of the upper, lower, and intermediate journal-boxes d, aand f, the shaft C, having a crank-connection with the intermediate journal-box, the sleeves a b c, adapted to oscillate in the journal-boxes and having angular orifices and thread-slots, and' the angular needle-bar D, extending through orifices in the sleeves and adapted to oscillate, substantially as described.

5. The combinatiomwith the driving-shaft C, the needle-bar D, the shuttle-carrier A', and the shafts R R', which are geared together and one of which is in gear with the needlebar and the other with the shuttle-carrier, of a clutch and a counter-clutch and a cam for actuating these clutches, substantially as described.

6. The combination, with the driving-shaft C, the needle-bar D, the shuttle-carrier A', means, substantially as described, for imparting to the needle-bar and to the shutte-carrier after the formation of each stitch a partial revolution round the longitudinal axis of the needle-bar, and a device for attaching the needle to the needle-bar parallel to but not in line with the axis of rotation of said needle-bar, of an automatic stop mechanism, substantially as herein described, for arresting the driving-shaft after the formation of a predetermined number of stitches.

7 The combination,with the driving-shaft C, the stitch-forming devices, such as a needle and shuttle, which receive motion from said driving-shaft, mechanism, substantially as described, for imparting to the needle-bar and to the shuttle-carrier a partial revolution round the longitudinal axis of the needle, and a device for attaching the needle to the needle-bar parallel to but not in line IOO IIO

with the axis of rotation of the needle-banof `In testimony whereof I have hereunto set 1o button-clamping jaws secured to the presserk my hand in the presence of two subscribing foot,VV substantial-1y as described. Witnesses.

8. The 'eoinbinatiom with the shuttle-driver 5 A', its pivot a', and the platform B', of the HERMANN GANSERT.

lever F', the pin D ,having its end chamfered for actuating the shuttle-driver, and the oam Witnesses:

E', for actuating the pin D', substantially as W. HAUFF, described. E. F. KASTENHUBER. 

